| Records |
| Author |
Köchy, M.; Banse, M.; Offermann, F. |
Title  |
German agricultural economy baseline (Thünen baseline): Users, process, experience |
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Conference Article |
| Year |
2016 |
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Bonn (Germany) |
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FACCE Cluster 2 Workshop “Support by policy and research for adaptation to climate change in farming systems and food-related industries” 2016-10-19 to 2016-10-20, Bonn, Germany |
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no |
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MA @ admin @ |
Serial |
4885 |
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| Author |
Köchy, M.; Lehtonen, H.; Schönhart, M.; Roggero, P.P. |
| Title |
Gesellschaftliche und wirtschaftliche Bedingungen für die europäische Landwirtschaft bis 2050 |
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Conference Article |
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2013 |
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Hub |
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GAP nach 2013, 2013-12-09 to 2013-12-10 |
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no |
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MA @ admin @ |
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2557 |
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| Author |
Bonesmo, S.; Beauchemin, K.A.; Harstad, O.M.; Skjelvåg, A.O. |
| Title |
GHG emissions mitigation potential of Norwegian dairy and beef farms |
Type |
Conference Article |
| Year |
2013 |
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LiveM |
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Sustainable Intensification: The pathway to low carbon farming, 2013-09-25 to 2013-09-27 |
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no |
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MA @ admin @ |
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2337 |
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Köchy, M.; Hiederer, R.; Freibauer, A. |
| Title |
Global distribution of soil organic carbon – Part 1: Masses and frequency distributions of SOC stocks for the tropics, permafrost regions, wetlands, and the world |
Type |
Journal Article |
| Year |
2015 |
Publication |
Soil |
Abbreviated Journal |
Soil |
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1 |
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Pages |
351-365 |
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•Soils contain 1062 Pg organic C (SOC) in 0-1 m depth based on the adjusted Harmonized World Soil Database. Different estimates of bulk density of Histosols cause an uncertainty in the range of -56/+180 Pg. We also report the frequency distribution of SOC stocks by continent, wetland type, and permafrost type. Using additional estimates for frozen and deeper soils, global soils are estimated to contain 1325 Pg SOC in 0-1m and ca. 3000 Pg, including deeper layers. The global soil organic carbon (SOC) mass is relevant for the carbon cycle budget and thus atmospheric carbon concentrations. We review current estimates of SOC stocks and mass (stock × area) in wetlands, permafrost and tropical regions and the world in the upper 1 m of soil. The Harmonized World Soil Database (HWSD) v.1.2 provides one of the most recent and coherent global data sets of SOC, giving a total mass of 2476 Pg when using the original values for bulk density. Adjusting the HWSD’s bulk density (BD) of soil high in organic carbon results in a mass of 1230 Pg, and additionally setting the BD of Histosols to 0.1 g cm−3 (typical of peat soils), results in a mass of 1062 Pg. The uncertainty in BD of Histosols alone introduces a range of −56 to +180 Pg C into the estimate of global SOC mass in the top 1 m, larger than estimates of global soil respiration. We report the spatial distribution of SOC stocks per 0.5 arcminutes; the areal masses of SOC; and the quantiles of SOC stocks by continents, wetland types, and permafrost types. Depending on the definition of “wetland”, wetland soils contain between 82 and 158 Pg SOC. With more detailed estimates for permafrost from the Northern Circumpolar Soil Carbon Database (496 Pg SOC) and tropical peatland carbon incorporated, global soils contain 1325 Pg SOC in the upper 1 m, including 421 Pg in tropical soils, whereof 40 Pg occurs in tropical wetlands. Global SOC amounts to just under 3000 Pg when estimates for deeper soil layers are included. Variability in estimates is due to variation in definitions of soil units, differences in soil property databases, scarcity of information about soil carbon at depths > 1 m in peatlands, and variation in definitions of “peatland”. |
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English |
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2199-398x |
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LiveM, Hub, ft_macsur |
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no |
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MA @ admin @ |
Serial |
4686 |
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| Author |
Bodirsky, B.L.; Rolinski, S.; Biewald, A.; Weindl, I.; Popp, A.; Lotze-Campen, H. |
| Title |
Global Food Demand Scenarios for the 21st Century |
Type |
Journal Article |
| Year |
2015 |
Publication |
PLoS One |
Abbreviated Journal |
PLoS One |
| Volume |
10 |
Issue |
11 |
Pages |
e0139201 |
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Long-term food demand scenarios are an important tool for studying global food security and for analysing the environmental impacts of agriculture. We provide a simple and transparent method to create scenarios for future plant-based and animal-based calorie demand, using time-dependent regression models between calorie demand and income. The scenarios can be customized to a specific storyline by using different input data for gross domestic product (GDP) and population projections and by assuming different functional forms of the regressions. Our results confirm that total calorie demand increases with income, but we also found a non-income related positive time-trend. The share of animal-based calories is estimated to rise strongly with income for low-income groups. For high income groups, two ambiguous relations between income and the share of animal-based products are consistent with historical data: First, a positive relation with a strong negative time-trend and second a negative relation with a slight negative time-trend. The fits of our regressions are highly significant and our results compare well to other food demand estimates. The method is exemplarily used to construct four food demand scenarios until the year 2100 based on the storylines of the IPCC Special Report on Emissions Scenarios (SRES). We find in all scenarios a strong increase of global food demand until 2050 with an increasing share of animal-based products, especially in developing countries. |
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1932-6203 |
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TradeM, ftnotmacsur |
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no |
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MA @ admin @ |
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4997 |
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